testNG之参数化测试

@Parameters

测试的时候，测试的数据可以放在testng.xml文件中，被测试的方法通过@Parameters注解传递到测试方法中

parameterizedTest.java

import org.testng.annotations.Parameters;
import org.testng.annotations.Test;

public class parameterizedTest {
    @Test
    @Parameters("myName")
    public void testMethod(String myName) {
        System.out.println("myName:" + myName);
    }
}

testng.xml：

<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd" >

<suite name="Suite1" verbose="1" >
    <test name="Regression1" preserve-order="true">
        <parameter name="myName" value="大盗如风"></parameter>
        <classes>
            <class name="parameterizedTest"></class>
        </classes>
    </test>
</suite>

运行testng.xml，结果如下：

myName:大盗如风

@DataProvider

@Test(dataProvider = "")

如果测试的数据较多的情况下，很显然这种方式不适合，那么可以通过@DataProvider生成测试数据，通过@Test(dataProvider = "")使用测试数据

parameterizedTest2.java

import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;

public class parameterizedTest2 {
    // 定义数据源
    @DataProvider(name = "test")
    public Object[][] createData() {
        return new Object[][]{{"dadaorufeng",29},{"zhangsan",28}};
    }

    // 使用数据源
    @Test(dataProvider = "test")
    public void verifyData(String name, int age) {
        System.out.println("name:" + name + ",age:" + age);
    }
}

testng.xml

<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd" >

<suite name="Suite1" verbose="1" >
    <test name="Regression1" preserve-order="true">
        <classes>
            <class name="parameterizedTest2"></class>
        </classes>
    </test>
</suite>

运行testng.xml，结果如下：

name:dadaorufeng,age:29
name:zhangsan,age:28

刚才这段代码，定义数据源和使用数据源的代码在同一个class中，如果不在同一个class的话，怎么办呢？parameterizedTest2.java中定义数据源，parameterizedTest3.java使用数据源

parameterizedTest2.java

import org.testng.annotations.DataProvider;

public class parameterizedTest2 {
    // 定义数据源
    @DataProvider(name = "test")
    public static Object[][] createData() {
        return new Object[][]{{"dadaorufeng",29},{"zhangsan",28}};
    }
}

parameterizedTest3.java

import org.testng.annotations.Test;

public class parameterizedTest3 {
    // 使用数据源
    @Test(dataProvider = "test")
    public void verifyData(String name, int age) {
        System.out.println("name:" + name + ",age:" + age);
    }
}

testng.xml

<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd" >

<suite name="Suite1" verbose="1" >
    <test name="Regression1" preserve-order="true">
        <classes>
            <class name="parameterizedTest3"></class>
        </classes>
    </test>
</suite>

直接运行testng.xml，结果如下，报错找不到test的@DataProvider ：

org.testng.TestNGException:
Method public void parameterizedTest3.verifyData(java.lang.String,int) requires a @DataProvider named : test
    at org.testng.internal.Parameters.findDataProvider(Parameters.java:268)
    at org.testng.internal.Parameters.handleParameters(Parameters.java:381)
    at org.testng.internal.Invoker.handleParameters(Invoker.java:1315)
    at org.testng.internal.Invoker.createParameters(Invoker.java:1022)
    at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1122)
    at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:125)
    at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:109)
    at org.testng.TestRunner.runWorkers(TestRunner.java:1147)
    at org.testng.TestRunner.privateRun(TestRunner.java:749)
    at org.testng.TestRunner.run(TestRunner.java:600)
    at org.testng.SuiteRunner.runTest(SuiteRunner.java:317)
    at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:312)
    at org.testng.SuiteRunner.privateRun(SuiteRunner.java:274)
    at org.testng.SuiteRunner.run(SuiteRunner.java:223)
    at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
    at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
    at org.testng.TestNG.runSuitesSequentially(TestNG.java:1039)
    at org.testng.TestNG.runSuitesLocally(TestNG.java:964)
    at org.testng.TestNG.run(TestNG.java:900)
    at org.testng.remote.RemoteTestNG.run(RemoteTestNG.java:110)
    at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:205)
    at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:174)

修改parameterizedTest3.java，添加dataProviderClass = parameterizedTest2.class属性，指定数据源所在的类

import org.testng.annotations.Test;

public class parameterizedTest3 {
    // 使用数据源
    @Test(dataProvider = "test",dataProviderClass = parameterizedTest2.class)
    public void verifyData(String name, int age) {
        System.out.println("name:" + name + ",age:" + age);
    }
}

再次运行testng.xml，结果如下，测试通过：

name:dadaorufeng,age:29
name:zhangsan,age:28